21712 - SCTE Broadband Nov2022 COMPLETE v1

50 Vol. 44 No. 4 - November 2022 Issue by UHD Alliance Video and Audio Interoperability What is interoperability? Interoperability is defined in Wikipedia as ‘a characteristic of a product or system, whose interfaces are completely understood, to work with other products or systems, at present or in the future, in either implementation or access, without any restrictions.’ 1 The 4K UHD home entertainment ecosystem and environment consists of 4K UHD displays, source devices (e.g. UHD Blu-ray players, set-top boxes, media receivers, gaming consoles, etc.), A/V Receivers and sound bars. Proper interoperability within this ecosystem would effectively mean that all devices would seamlessly connect together and result in a proper image and proper sound. What should happen? At the base of every 4K UHD home entertainment environment is a 4K UHD display. Within this environment there may also be one or more source devices such as a Blu-ray Disc player, cable box, gaming console, media player (e.g. Apple TV 4K, Fire TV 4K, Chromecast, Roku Streaming Stick +, etc.) a multi-channel A/V receiver or sound bar. When connecting these devices together, the result should be a proper picture appearing on the display and proper audio heard from the output device whether it is the TV speakers, the sound bar or the speakers connected to a A/V receiver. What is a Proper Picture? 4K UHD content provides for many great capabilities which can include: High Dynamic Range (HDR) Provides greater range of contrast compared to HD content resulting in greater clarity and more detail in the shadows and highlights. 2 Wide Color Gamut (WCG) Provides support for the BT.2020 colour gamut which covers approximately 75% of the visible colour gamut compared to the BT.709 (HD) colour gamut which covers approximately 39% of the visible colour gamut. in Today’s 4K UHD Home Entertainment Environment technical HDR / SDR The Lego Batman Movie © 2017 Warner Bros. Entertainment Inc. TM & © DC Comics © 2017 The LEGO Group “The Lego Batman Movie now available on 4K Ultra HD Blu-ray”